diff --git a/krfb/trayicon.h b/krfb/trayicon.h
--- a/krfb/trayicon.h
+++ b/krfb/trayicon.h
@@ -18,6 +18,8 @@
 #ifndef TRAYICON_H
 #define TRAYICON_H
 
+#include <QHash>
+
 #include <KStatusNotifierItem>
 
 class RfbClient;